A. K. Sweetman, and J. J. Middelburg, and A. M. Berle, and A. F. Bernardino, and C. Schander, and A. W. J. Demopoulos, and C. R. Smith

To evaluate how mangrove invasion and removal can modify short-term benthic carbon cycling and ecosystem functioning, we used stable-isotopically labeled algae as a deliberate tracer to quantify benthic respiration and C-flow over 48 h through macrofauna and bacteria in sediments collected from (1) an invasive mangrove forest, (2) deforested mangrove sites 2 and 6 years after removal of above-sediment mangrove biomass, and (3) two mangrove-free control sites in the Hawaiian coastal zone. Sedimen...

Aneesh Basheer

Haemophagocytic lymphohistiocytosis (HLH), a potentially fatal disorder, may occur as a primary genetic abnormality or secondary to a number of diseases, including malignancies, infections, and connective tissue disorders. The clinical course and outcome of underlying disease is often dramatically altered in the presence of secondary HLH. Although data on incidence in adults are inadequate, paediatric HLH is estimated to occur in 1–225 per 300,000 live births. 1–3 There is growing evidence th...

Alexandre Hilsdorf, and Danilo Caneppele, and José Eduardo Krieger

Protein and mitochondrial DNA have been used as molecular markers to assess variability in stock identification studies of fishes. Protein and mtDNA used for electrophoretic analysis are extracted from tissues, which often leads to death of the individuals. In this study, we present a skeletal muscle biopsy procedure to extract mitochondrial DNA that does not require specimen sacrifice. Eighty pirapitinga-do-sul (Brycon opalinus) were biopsied by the present technique, with no mortalities record...

Ingo S Wehrtmann, and Vanessa Nielsen-Muñoz

Global catches of marine fishery resources declined during the last decades; however, there has been a trend of increasing exploitation of deepwater resources that are especially vulnerable to depletion. Such a tendency was noticeable in Pacific Latin América, too. In Costa Rica, the vast majority of the commercial fishing activities are concentrated on the Pacific coast. The target species for the deepwater fishery in Costa Rica are the two pandalids Heterocarpus affinis and H. vicarius as well...

N. Mittelmeier, and J. Allin, and T. Blodau, and D. Trabucchi, and G. Steinfeld, and A. Rott, and M. Kühn

For offshore wind farms, wake effects are among the largest sources of losses in energy production. At the same time, wake modelling is still associated with very high uncertainties. Therefore current research focusses on improving wake model predictions. It is known that atmospheric conditions, especially atmospheric stability, crucially influence the magnitude of those wake effects. The classification of atmospheric stability is usually based on measurements from met masts, buoys or lid...

Víctor Arízaga-Ballesteros, and Mario René Alcorta-García, and Lizzeth Carolina Lázaro-Martínez, and Jesús Manuel Amézquita-Gómez, and José Manuel Alanís-Cajero, and Luis Villela, and Fabiola Castorena-Torres, and Víctor Javier Lara-Díaz

Background and Objectives: The transmembrane glycoprotein TREM-1 triggers an inflammatory response. Its soluble fraction (sTREM-1) has been shown to have diagnostic accuracy for late-onset neonatal sepsis (LONS). Until now, the potential of sTREM-1 to predict septic shock and/or death in septic neonates has not been explored. This study obtained estimates of the incidence and prevalence of septic shock and/or death in septic neonates for future sample size calculations for confirmatory studies a...

Catherine Luria, and Linda Amaral-Zettler, and Linda Amaral-Zettler, and Hugh Ducklow, and Jeremy Rich

The marine ecosystem along the Western Antarctic Peninsula (WAP) undergoes a dramatic seasonal transition every spring, from almost total darkness to almost continuous sunlight, resulting in a cascade of environmental changes, including phytoplankton blooms that support a highly productive food web. Despite having important implications for the movement of energy and materials through this ecosystem, little is known about how these changes impact bacterial succession in this region. Using 16S rR...

G. Robinson, and G. Robinson, and G. Robinson, and T. MacTavish, and C. Savage, and C. Savage, and G. S. Caldwell, and C. L. W. Jones, and T. Probyn, and B. D. Eyre, and S. M. Stead

The treatment of organic wastes remains one of the key sustainability challenges facing the growing global aquaculture industry. Bioremediation systems based on coupled bioturbation–microbial processing offer a promising route for waste management. We present, for the first time, a combined biogeochemical–molecular analysis of the short-term performance of one such system that is designed to receive nitrogen-rich particulate aquaculture wastes. Using sea cucumbers (<i>Holothuria scabra</i>...

Santo Caracappa, and Maria Flaminia Persichetti, and Antonio Piazza, and Giulia Caracappa, and Antonino Gentile, and Sandra Marineo, and Daniela Crucitti, and Marco Arculeo

It has been estimated that 44,000 Caretta caretta turtles die every year due to anthropomorphic activity in the Mediterranean Sea, and that longline fishing is one of the most significant causes of mortality. A total of 482 specimens of C. caretta were rescued from different parts of the Sicilian coast (Mediterranean Sea) from 2014 to 2016. The most numerous stranding was recorded during the spring and summer seasons, mainly along the north and eastern coasts of Sicily. The curved carapace lengt...

Nian-Zhi Jiao, and Da-Ke Chen, and Yong-Ming Luo, and Xiao-Ping Huang, and Rui Zhang, and Hai-Bo Zhang, and Zhi-Jian Jiang, and Fei Zhang

The ecosystems of China seas and coasts are undergoing rapid changes under the strong influences of both global climate change and anthropogenic activities. To understand the scope of these changes and the mechanisms behind them is of paramount importance for the sustainable development of China, and for the establishment of national policies on environment protection and climate change mitigation. Here we provide a brief review of the impacts of global climate change and human activities on the...

M. Radha, and A.G. Murugesan

Marine macroalgae are promising substrates for biofuel production. Pretreating macroalgae with chemicals could remove microbial inhibitors and enhance the accessibility of the microorganisms involved in the process to the substrates leading to increased product yield. In the present study, Padina tetrastromatica a seaweed species was subjected to different chemical pretreatment in order to remove phenolic content and to enhance biohydrogen production. Different mineral acids (i.e., HCl, H2SO4, a...

R.K. Abraham, and N. Kelkar, and A.B. Kumar

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Miguel eFERNANDEZ-DEL-OLMO, and Jose Andres eSanchez, and Olalla eBello, and Virgina eLopez-Alonso, and Gonzalo eMarquez, and Luis eMorenilla, and Xabier eCastro, and Manolo eGiraldez, and Diego eSantos-Garcia

Gait disturbances are one of the principal and most incapacitating symptoms of Parkinson’s disease (PD). In addition, walking economy is impaired in PD patients and could contribute to excess fatigue in this population. An important number of studies have shown that treadmill training can improve kinematic parameters in PD patients. However, the effects of treadmill and overground walking on the walking economy remain unknown. The goal of this study was to explore the walking economy changes in ...

Yayoi M. Hirano, and Yoshuiaki J. Hirano, and Mayumi Yamada

Two crawling medusae, Staurocladia oahuensis (Edmondson, 1930) and S. bilateralis (Edmondson, 1930) were found to be abundant in intertidal rock pools in Kominato from late summer until early winter. The two species were found to rarely share the same individual alga, and sometimes showed exclusive occupancy of pools at higher intertidal levels. The abundance of the two species of medusae fluctuated widely over time with both species showing similar population structures during their period of o...

D. Zúñiga, and C. Santos, and M. Froján, and E. Salgueiro, and M. M. Rufino, and F. De la Granda, and F. G. Figueiras, and C. G. Castro, and F. Abrantes

The objective of the current work is to improve our understanding of how water column diatom's abundance and assemblage composition is seasonally transferred from the photic zone to seafloor sediments. To address this, we used a dataset derived from water column, sediment trap and surface sediment samples recovered in the NW Iberian coastal upwelling system. <br><br> Diatom fluxes (2.2 (±5.6) 10⁶ valves m⁻² d⁻¹) represented the majority of the siliceous microorga...

Guilherme Dumaresq de Oliveira, and Karen Maria da Costa Mattos

<p class="MsoNormal" style="margin: 0cm 0cm 10pt;"><span style="font-size: small; font-family: Calibri;">In this work, the aim is to demonstrate the growth of the shrimp breeding (Carcinicultura) in Rio Grande do Norte, Brazil, as well as studying the environmental impacts generated by the activity in the mangrove ecosystem. Therefore, the importance of such environment will be showed, considering that the activity depends on that environment to subsist. Thus, environmental impacts are generated...

T. C. Brachert, and M. Reuter, and S. Krüger, and J. S. Klaus, and K. Helmle, and J. M. Lough

In geological outcrops and drill cores from reef frameworks, the skeletons of scleractinian corals are usually leached and more or less completely transformed into sparry calcite because the highly porous skeletons formed of metastable aragonite (CaCO₃) undergo rapid diagenetic alteration. Upon alteration, ghost structures of the distinct annual growth bands often allow for reconstructions of annual extension ( =  growth) rates, but information on skeletal density needed for reconstru...

Sevostyanov Ruslan A., and Veremey Evgeny I.

Advanced marine surface crafts, such as SWATHs, catamarans or hovercrafts become more and more popular for a great range of various tasks. They usually operate at much higher speed than conventional ships. Moreover, in the open sea there are a lot of requirements and restrictions concerning the quality of such crafts’ dynamics, especially in case of the wind or waves. This paper considers application of the control law with a special multipurpose structure for autopilot design for amphibious air...

Sergio Makrakis, and Theodore Castro-Santos, and Maristela Cavicchioli Makrakis, and Ricardo Luiz Wagner, and Maurício Spagnolo Adames

Improperly installed or poorly maintained culverts can pose a serious threat to fish by disrupting their habitat and endangering spawning success. Road culverts that are not designed for fish passage frequently can become obstacles. This can be especially problematic for migratory species, but can lead to fragmentation of resident populations as well. This study evaluated 40 culverts of 29 sites within a 25-km radius from Toledo city, Paraná State, southern Brazil, with respect to their likely e...

Fatma Arık Çolakoğlu, and Gözde Ova, and Burcu Köseoğlu

Durairaj Thirumurugan, and Ramasamy Vijayakumar

Objective: To investigate the potentiality of the marine actinobacteria isolated from marine soil against fish pathogenic bacteria. Methods: In the present study, a total of 33 soil samples were collected from the Bay of Bengal, east coast region (ECR) of Tamilnadu, South India. Then they were used for the isolation of actinobacteria by using conventional serial dilution technique on starch casein agar medium. The antibacterial activities of the actinobacteria were screened primarily by...

Hwang Sung-Wong, and Seo Dong-Il, and Yoon Ju-Duk, and Kim Jeong-Hui, and Park Sang-Hyeon, and Jang Min-Ho, and Chang Kwang-Hyeon

Wanga Renqiang, and Deng Hua, and Miao Keyin, and Zhao Yue, and Du Jiabao

An integral sliding mode controller with neural network was investigated for ship navigation, which realizes the accurate and stable tracking of the ship in the steering process, on the basis of backstepping method. First of all, an integrator sliding surface were designed with the sliding mode variable structure control technology. Secondly, radial basis function neural network was applied to approximate the system nonlinear function and uncertain parameters. Furthermore, a nonlinear damping la...

G. Höltker

No abstract available.

Adnan Ayaz, and Uğur Özekinci, and Uğur Altınağaç, and Özcan Özen

LL. Wedekin, and FG. Daura-Jorge, and VQ. Piacentini, and PC. Simões-Lopes

The use of space by the resident population of estuarine dolphins (Sotalia guianensis) in Norte Bay, southern Brazil was studied by boat surveys between 2000 and 2003. Data such as the geographical position and group size was collected at 5-minute intervals using focal-group sampling. The distribution and seasonal and daily group home-ranges were estimated using a GIS (Geographic Information System) environment. The dolphins did not use the area homogeneously, restricting their activities to a w...

A. H. W. Beusen, and A. F. Bouwman, and L. P. H. Van Beek, and J. M. Mogollón, and J. J. Middelburg

Various human activities – including agriculture, water consumption, river damming, and aquaculture – have intensified over the last century. This has had a major impact on nitrogen (N) and phosphorus (P) cycling in global continental waters. In this study, we use a coupled nutrient-input–hydrology–in-stream nutrient retention model to quantitatively track the changes in the global freshwater N and P cycles over the 20th century. Our results suggest that, during this period, the global nutrient ...

Shinsuke Kirizuki, and Takehiko Matsushita, and Ryosuke Kuroda, and Daisuke Araki, and Shinya Oka, and Tomoyuki Matsumoto, and Nobuaki Miyaji, and Koji Takayama, and Masahiro Kurosaka

Jale Korun

Pichierri G, and Coppe A, and Lorenzetti S, and Murer K, and de Bruin ED

Giuseppe Pichierri,1 Amos Coppe,1 Silvio Lorenzetti,2 Kurt Murer,1 Eling D de Bruin11Institute of Human Movement Sciences and Sport, Department of Health Sciences and Technology, ETH Zurich, Switzerland; 2Institute for Biomechanics, Department of Health Sciences and Technology, ETH Zurich, SwitzerlandBackground: This randomized controlled pilot study aimed to explore whether a cognitive-motor exercise program that combines traditional physical exercise with dance video gaming can improve the vol...

F. Abujanra, and AA. Agostinho, and NS. Hahn

In this study, we evaluated the influence of various hydrological cycles on the feeding body condition of fish species of different trophic guilds in the Paraná River floodplain, as well as the impacts of upstream impoundments on fish conditions. Attributes of the river floods (duration, time of year, intensity, and variability in a given year) and the body condition, measured by the mean residuals of length-weight ratios, of the detritivorous, herbivorous, insectivorous, invertivores, omnivorou...

Gülnur Metin, and Cüneyt Süzer, and H. Tuncay Kınacıgil, and Akın T. İlkyaz

Radoičić Rajka, and Carras Nicolaos, and Conrad Marc Andre

Pseudoclypeina? crnogorica was first described in 1972 from the Lower, Cretaceous limestone of the Njegoš Mt. area, Montenegro, Dinaric Carbonate Platform. It differs from other species of the genus Pseudoclypeina by its calcification pattern, the shape and relative length of the first and second order laterals, and by the presence in the type-material (a thin section containing the holotype) of sections standing for the sterile portion of the thallus. This is why in this paper...

Sae Yun Kwon, and Joel D. Blum, and Daniel J. Madigan, and Barbara A. Block, and Brian N. Popp

Abstract Analyses of mercury (Hg) isotope ratios in fish tissues are used increasingly to infer sources and biogeochemical processes of Hg in natural aquatic ecosystems. Controlled experiments that can couple internal Hg isotope behavior with traditional isotope tracers (δ13C, δ15N) can improve the applicability of Hg isotopes as natural ecological tracers. In this study, we investigated changes in Hg isotope ratios (δ202Hg, Δ199Hg) during bioaccumulation of natural diets in the pelagic Pacific ...

Alonso Ramírez, and Pablo E Gutiérrez-Fonseca

Aquatic macroinvertebrates are involved in numerous processes within aquatic ecosystems. They often have important effects on ecosystem processes such as primary production (via grazing), detritus breakdown, and nutrient mineralization and downstream spiraling. The functional feeding groups (FFG) classification was developed as a tool to facilitate the incorporation of macroinvertebrates in studies of aquatic ecosystems. This classification has the advantage of combining morphological characteri...

ZELIHA DEMIREL, and FERDA F. YILMAZ-KOZ, and ULKU N. KARABAY-YAVASOGLU, and GUVEN OZDEMIR, and ATAKAN SUKATAR

The present study was conducted to evaluate the antioxidant and antimicrobial activity of methanol, dichloromethane and hexane extracts, as well as the essential oils of brown algae (Phaeophyta) Colpomenia sinuosa, Dictyota dichotoma, Dictyota dichotoma var. implexa, Petalonia fascia and Scytosiphon lomentaria. The essential oil of the macroalgae was obtained by steam distillation and analyzed by GC and GC/MS. The antioxidant activity of the algal extracts was determined using the procedures of ...

Priscila Soares Costa Sacchetin, and Ângela Maria Moraes, and Carlos Augusto Gomes Leal, and Henrique César Pereira Figueiredo

<abstract language="eng">Alginate microparticles were prepared by an emulsion method aiming oral controlled release of antigens to fish. The effects of emulsification temperature and impeller type on particle morphology, average diameter, and size distribution were evaluated. Microparticles contaning formalin-killed Flavobacterium columnare cells (a model antigen) were prepared and characterized regarding bacterial release and particle stability when exposed to Nile tilapia (Oreochromis niloticu...

Tatiana Costa, and Leonel Perez

This paper presents the study of the morphodynamics of dunes of Boca Sur neighborhood, located at the metropolitan region of Concepción, Chile. The purpose is to establish criteria to the use and occupation of the area for the construction of an urban park. A characterization of the dune’s field and surrounding area were made, including its environmental and social components. The method used was field’s observation, literature review, elaboration of dunes’ topographic profile and comparative an...

Alejandro Tagliafico, and Néstor Rago, and María Salomé Rangel

Rhinobatos percellens es capturada en Venezuela por la flota artesanal que opera con redes de fondo. Está clasificada por la IUCN como casi amenazada, y no existen estudios sobre su biología o pesquería en el país. Por ello, se analizaron desembarques de la pesca artesanal de playa la Pared (isla de Margarita) durante enero-diciembre 2007. A cada ejemplar capturado se le determinó la longitud total, sexo y madurez. Fueron analizados 210 ejemplares, 159 hembras y 51 machos. El 81% de los ejemplar...

Cameron N. Christou, and Lev V. Idels

Marine protected areas (MPA) become part of modern fishery management to safeguard marine life and sustain ecosystem processes. Based on a classical Ricker's model, the deterministic nonlinear sink-source model of MPA is presented. Sufficient conditions for the existence of positive bounded steady-states are obtained. The present value of net revenue is maximized subject to population dynamics in the fishing zone and in the protected area. The analysis has shown that there is an optimal eq...

Roshdy E, and Rajaratnam V, and Maitra S, and Sabry M, and Ait Allah AS, and Al-Hendy A

Eman Roshdy,1,* Veera Rajaratnam,2,* Sarbani Maitra,2 Mohamed Sabry,3,4 Abdou S Ait Allah,3,4 Ayman Al-Hendy2 1Department of Public Health and Community Medicine, Sohag University, Sohag, Egypt; 2Department of Obstetrics and Gynecology, Meharry Medical College, Nashville, TN, USA; 3Department of Obstetrics and Gynecology, Sohag University, Sohag, Egypt; 4Ibn Sina IVF Center, Ibn Sina Hospital, Sohag, Egypt*These authors contributed equally to this workBackground: Uterine fibroids (UFs, also know...

Maarit Virta, and Anita Salakari, and Mervi Antila, and et al

Maarit Virta1,2, Anita Salakari1, Mervi Antila1, Esa Chydenius1, Markku Partinen1, Markus Kaski1, Risto Vataja3, Hely Kalska2, Matti Iivanainen11Rinnekoti Research Centre, Espoo, Finland; 2Department of Psychology, University of Helsinki, Finland; 3Kellokoski Hospital, Kellokoski, FinlandAbstract: In clinical practice, a growing need exists for effective non-pharmacological &amp;shy;treatments of adult attention-deficit/hyperactivity disorder (ADHD). Here, we present the results of a pilot study...

Christian M Ibáñez, and Roger D Sepúlveda, and Patricio Ulloa, and Friedemann Keyl, and M. Cecilia Pardo-Gandarillas

ABSTRACT. The jumbo squid Dosidicus gigas is the most abundant cephalopod species in the southeastern Pacific Ocean, which supports the biggest cephalopod fishery in the world. Due to its growing economic importance, the population growth and distributional expansion of this squid is being increasingly studied. Nevertheless, some basic features of the biology of D. gigas are still unknown or have been poorly investigated. In this review we summarize the known information regarding the biology an...

Kakanov Mikhail, and Kaliuzhny Mikhail, and Borisov Oleg, and Gromov Vladislav, and Vlasov Sergey, and Somov Sergey, and Pyrkin Anton

In this paper the robust output control with anti-windup compensation and its implementation to the robotic boat are addressed. The detailed control design and stability analysis of the closed-loop systems are provided in the work. Extensive experimental verification of the dynamic positioning system based on various modifications of the basic controller is carried out by means of robotic boat. The corresponding experimental results are presented and analysed.

Abhi Shah, and D.M. Maurya, and G. Archana

The Mahi estuary is located at the western fringe of the Gujarat alluvial plain in Mainland Gujarat and presents an interesting geomorphic set up. Subsurface microbial diversity plays a vital role in maintenance of good soil health, because microorganisms are involved in many essential functions such as soil formation, elemental cycles, contaminant degradation, and the maintenance of groundwater quality. In the Indian subcontinent, subsurface microbial processes and the diversity are not well st...

Arun Gupta, and Sougat Ray, and Rahul Tyagi, and Avishek Kumar

Introduction: In confined afloat settings, the threat of an acceleration of the Influenza outbreak is substantial, causing high morbidity of the personnel on board, disrupting daily activities, and leading to low crew morale. In this study, H1N1 Influenza outbreak in a Naval Warship and its control measures are described. Materials and Methods: It is a study of 21 clinically suspected cases of H1N1 Influenza. Cases were reported within 3 weeks from a ship company, all of whom were susceptible. T...

Sasha eWagner, and Rudolf eJaffe, and Kaelin eCawley, and Thorsten eDittmar, and Aron eStubbins

Optical properties are easy-to-measure proxies for dissolved organic matter (DOM) composition, source and reactivity. However, the molecular signature of DOM associated with such optical parameters remains poorly defined. The Florida coastal Everglades is a subtropical wetland with diverse vegetation (e.g., sawgrass prairies, mangrove forests, seagrass meadows) and DOM sources (e.g., terrestrial, microbial and marine). As such, the Everglades is an excellent model system from which to draw sa...

Lorena Lima, and Pablo Martinez, and Wagner Molina

The Tetraodontiformes are the most derived group of teleostean fish. Among other apomorphies, they are characterized by a high degree of fusions or significant bone loss in the head and body. In the early phylogenetic proposals presented for this order, the families Balistidae and Monacanthidae have been unanimously considered to be closely related. Although they have moderate species diversity, they are scarcely known in cytogenetic aspect and chromosomal pattern comparisons between these group...

Carlos Quispe, and Sara Purca

El Niño connects globally climate, ecosystems and socio-economic activities. Since 1980 this event has been tried to be predicted, but until now the statistical and dynamical models are insuffi cient. Thus, the objective of the present work was to explore using an autoregressive moving average model the effect of El Niño over the sea surface temperature (TSM) off the Peruvian coast. The work involved 5 stages: identifi cation, estimation, diagnostic checking, forecasting and validation. Sim...

Filipe M. A. Alves, and Luís M. Chícharo, and Ester Serrao, and Antonio D. Abreu

This study describes sea urchin spatial distribution in relation to environmental factors, and the relationship between Diadema antillarum density and algal abundance. Twenty-three transects around Madeira Island were surveyed by scuba divers, and sea urchin density and algal cover were determined in situ. Sampling sites along these transects were characterised in terms of distance from the tide line, water depth, substratum type, bottom declivity and water turbulence. Diadema antillarum was the...